Method and means for treating paper on a printing-press.



I OJ H. MORTIMER. METHOD AND MEANS FOR TREATING PAPER ON A PRINTING PRESS.

APPLICATION FILED IL]. 27, 1911.

1,037,965, Patented Sept. 10, 1912.

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G. H. MORTIMER. METHOD AND MEANS FOR TREATING PAPER ON A PRINTING PRESS.

7, APPLICATION FILED JAN. 27, 1911. 1,037,965,, Patented Sept. 10,1912.

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Iillllllh'ii lllllllllll WWI ' ing at Chicago, in the county of Cook and necessary UNITED STATES PATENT OFFICE.

CHARLES H. MORTIMER, or CHICAGO, ILLINOIS, ASSIGNOR or r. .SOULE, or orI o'AGo, ILLINOIS.

O -se s imme METHOD AND MEANS r'on rnnn'rmo PAPER ON 4 PR1irrINo-rianss.

To all whom it mag concern:

Be it known that 1, CHARLES H. MORTI- MER, a citizen (if the United States, resid- State of Illinois, have invented new and useful improvements in Methods and Means for Treating Paper on a Printing-Press,

of which the following is a specification. The presence of electricity under certain conditions of temperature in paper being fed to printing presses has long been the cause of great trouble and expense to printers because the electricity not only affects the character of the workbut it reduces the speed, and slip-sheeting or smutting is made by'reas'on of the offsetting which almost invariably occurs.

The object of this invention is to eliminate the electricity from the sheet and to shrink the sheet before it is printed by applying heat to the. sheet while on the feed board of a printing press, and to prevent ofisetting by applying heat to the sheet after it is printed andv while it still remains on the impression cylinder.

In the accompanying drawings illustrating one embodiment of the invention Figure 1 is a sectional View. Fig. 2 is a top plan view ofthe feed board of a printing press showing the invention embodied therewith.

Fig. 3 is a bottom plan view of a portion of the feed board showing the invention. Fig. 4 is an enlarged sectional view showing a slightly different embodimentof the invention, Fig. 5 is a fragmentary bottom plan view of the perforated. plate. Fig. 6 is a detail view, partly in section, showing one end of the heat coil and the manner of sup porting it. Fig. 7 is 'a detail sectional view showing the means foradjusting the damper plate. Fig. 8 is a sectlonal view on the line,

88 of Fig. 7.

My invention may be I embodied with printing presses of various types and in the drawings I have shown the feed board 9 and the impression cylinder 10 conventionally. The feed board has a transverse opening 11 extending across that po'rtion'of the feed board over which the paper travels. This opening is provided with a perforated'cover plate 12 which is fastened to the feed" Specification of Letters Patent. Patented Sept. 10, 1912. Application filed January 2 7, 1911. Serial No. 604,944. Q 3 I board and a perforated damper plate 13 is fastened to the underside of the with the perforations in the cover plate by adjusting the damper plate longitudinally and this adjustment is accomplished by operating the slide bar 16 which is connected with thedamper platea't one end thereof -and projects laterally under the feed board in suitable guides 17 thereon. By 0 crating this slide bar the damper plate maylie shifted longitudinally as desired and in this movement the damper plate is guided between the side walls 11 of the opening 11. The damper plate may be shifted to regulate and control the heat as desired.

3 An electric heat coil 18 of suitable constructionis supported on the underside of the feed board below the opening 11 and is protected by a shield 19 which is preferably hinged tothe feed board at 20 and secured in place by suitable fastening devices 21. The'heat coil is preferably provided with tubular sockets 22 in its ends to receive the i plugs 23 which are made rigid with the angle supportin" arms 24 and these arms are engaged with brackets 25 on the underside of the feed board at the ends ofthe o enin therein. This manner of en rth mg the hea-tcoil provides for such expansion and contraction as may. take place dur- I 'ing the use and non-use of the -.invention Without necessitating any special adjustment or attention. q f A The heat coil is located in the angle formed between the feed board andthe im pression cylinder, andtheshield 19 is probottom openings 26, as shown in Fig. 4, if

desired. One or more lines of openings 28 may also be provided in the-f dgbo rd in front ofthetransverse openingl Lffl J .In ,practice when conditions require t the switch 29 is operated to energize the heat coil and the damper plate is adjusted to register its perforations with the perforat-ions in the co'ver plate so that the heat from the coil may pass up to heat the paper and absorb the electricity therein. Some heat will pass through the shield and upward through the openings 28 and some will pass to the cylinder, further heating the sheet on the cylinder after it is printed. The heat which is applied to the sheet while on the feed board not only eliminates the electricity in the paper but also shrinks the paper before it is printed. By thus shrinking the paper before it is printed the proper registration of the work in successive printing operations is insured. The sheet is further heated after it is printed and while still remaining on the impression cylinder and this prevents offset-ting.

My invention is simple in character, in

' expensive to manufacture and applicable to a large variety of presses. It entirely elimihates the electricity in the paper and avoids the consequences due to Its presence, preservlng the character of the work and speed of the press. Furthermore, it obviates the necessity of slip-sheeting or smutting by, "reason of the heat imparted to" the sheet whileon the feed-board and on the cylinder and in this way eliminates an expense which has heretofore beennecessary. The

invention has other advantages which will be apparent to those skilled in the art and of course it will be understood that the heat coil may be heated by gas or otherwise instead of electrically if desired.

' What I claim and desire to secure by Letters Patent is:

1. The herein-described method which consists in applying heat to one face of the sheet to be printed and before the printing sheet and to shrink the sheet before it is operation to eliminate electricity from the printed, and subsequently applying heat I to the opposite face of the sheet after the print ing operation to prevent off-setting.

-2. The herein described method which consists in preserving the character of the work and speed of-the press and preparing. the sheet for proper registration in successive printing operations by applying heat to one face of the sheet while on the feedboard of a printing press to eliminate electricity from and to shrink the sheet before it is printed, and also applying heat'to the opposite face of the sheet after it is printed and while still remaining on the impression cylinder to prevent ofl'setting.

3. The combination of the impressioncylinder of a printing press, a feed board provided with perforatlonsadjacent its cleliv-- ery end, and heating means located in the angle between said cylinder; and feed board whereby heat may be delivered from said means to the sheet on the board before the printing op eration and to the sheet on the cylinder after the printing operation.

4:. The combination of the impression cylinder of a printing press, a feed board provided with perforations adjacent the cylinder end, andmeans located beneath the feed board and adjacent the cylinder for applying heat to. one face of the paper before the printing operation and to t e opposite face after the printing operation.

5. The combination of a feed board for a printing press having a transverse opening therein, aperforated cover plate over said opening and forming a part of the feed-board, a heating device located below the cover plate and having sockets in its ends, plugs loosely arranged in said sockets, and supports engaged with said plugs and the feed board to suspend the heating device from the board and permit expansion and contraction of said device, substantially as described.

6. The combination of a feed board for a printing 'press having a transverse opening therein, perforated cover and damper plates arranged in juxtaposition over said opening, the cover plate forming a part of the feed-board, means for. adjusting the damper plate, a heating device located below said plates and having tubular guides in its ends, plugs loosely arranged in said sockets, and angle arms rigid with said plugs and engaged with said feed board to suspend the heating device from the feed board and permit expansion and contraction of said device, substantially as described.

7. The combination of a feed board for a printing press having an opening therein, a perforated cover plate over said opening and forming a part of the feed-board, a heating device located below said cover plate, and a perforated shield supported from the underside of the feed board and covering said heating device, substantially as described.

8. The combination of the feed board and impression cylinder of a printing press, a heating device suspended from the underside of the feed board in the angle formed by said board and the cylinder and adjacent to the delivery end of the board and to the cylinder, said board having a transverse opening therein over the heating device, perforated cover .and damper plates arranged in juxtaposition over said opening, the cover plate forming a part of the feedboard, and means for-adjusting the damper plate.

9. The combination of the feed board and impression cylinder of a printing press, a

heating device arranged in the angle formed perforated shield supported from the unby the feed beard and the cylinder and adderside of the feed board and inclosing the jacent to the'delivery end of the feed hoard heating device.

and to the cylinder, said feed board having CHARLES H. MORTIMER. 5 an opening over said heating device, a per- WVitnesses: forated cover plate over said opening and CHARLES S. SOULE, I C

forming a part of the feed-board, and a WM. 0. BELT. 

